Hi guys, I'm installing a new storage Dell Compellent SCv2020 with vSphere 5.5 U3b for an existing customer
I have deep knowledge of Dell PowerVault storages but I'm new with Dell Compellent. I've read that making snapshots for backups or running Storage vMotion can affect free space on the storage due to native LUN thin provisioning: communities.vmware.com/.../436628;tstart=0
The suggestion is to manually run or schedule the command "esxcli storage vmfs unmap -l MyDatastore" that invokes the SCSI UNMAP primitive
I've tested a Storage vMotion and indeed the space on the source LUN remain allocated until manually "unmapped". I've not yet tested how backup snapshots affect the free space on the storage because I've not yet migrated any VM on the new infrastructure (by the way I will use Veeam Backup v8 that heavily rely on VMware snapshots)
Anyone here can share ideas and feedback? Many thanks guys
Marco
